Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/lua/lua.h
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1 /* 2 ** $Id: lua.h,v 1.285.1.4 2015/02/21 14:04:50 roberto Exp $ 3 ** Lua - A Scripting Language 4 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org) 5 ** See Copyright Notice at the end of this file 6 */ 7 8 9 #ifndef lua_h 10 #define lua_h 11 12 #include <sys/zfs_context.h> 13 14 #include <sys/lua/luaconf.h> 15 16 17 #define LUA_VERSION_MAJOR "5" 18 #define LUA_VERSION_MINOR "2" 19 #define LUA_VERSION_NUM 502 20 #define LUA_VERSION_RELEASE "4" 21 22 #define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 23 #define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE 24 #define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2015 Lua.org, PUC-Rio" 25 #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" 26 27 28 /* mark for precompiled code ('<esc>Lua') */ 29 #define LUA_SIGNATURE "\033Lua" 30 31 /* option for multiple returns in 'lua_pcall' and 'lua_call' */ 32 #define LUA_MULTRET (-1) 33 34 35 /* 36 ** pseudo-indices 37 */ 38 #define LUA_REGISTRYINDEX LUAI_FIRSTPSEUDOIDX 39 #define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i)) 40 41 42 /* thread status */ 43 #define LUA_OK 0 44 #define LUA_YIELD 1 45 #define LUA_ERRRUN 2 46 #define LUA_ERRSYNTAX 3 47 #define LUA_ERRMEM 4 48 #define LUA_ERRGCMM 5 49 #define LUA_ERRERR 6 50 51 52 typedef struct lua_State lua_State; 53 54 typedef int (*lua_CFunction) (lua_State *L); 55 56 57 /* 58 ** functions that read/write blocks when loading/dumping Lua chunks 59 */ 60 typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); 61 62 typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud); 63 64 65 /* 66 ** prototype for memory-allocation functions 67 */ 68 typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); 69 70 71 /* 72 ** basic types 73 */ 74 #define LUA_TNONE (-1) 75 76 #define LUA_TNIL 0 77 #define LUA_TBOOLEAN 1 78 #define LUA_TLIGHTUSERDATA 2 79 #define LUA_TNUMBER 3 80 #define LUA_TSTRING 4 81 #define LUA_TTABLE 5 82 #define LUA_TFUNCTION 6 83 #define LUA_TUSERDATA 7 84 #define LUA_TTHREAD 8 85 86 #define LUA_NUMTAGS 9 87 88 89 90 /* minimum Lua stack available to a C function */ 91 #define LUA_MINSTACK 20 92 93 94 /* predefined values in the registry */ 95 #define LUA_RIDX_MAINTHREAD 1 96 #define LUA_RIDX_GLOBALS 2 97 #define LUA_RIDX_LAST LUA_RIDX_GLOBALS 98 99 100 /* type of numbers in Lua */ 101 typedef LUA_NUMBER lua_Number; 102 103 104 /* type for integer functions */ 105 typedef LUA_INTEGER lua_Integer; 106 107 /* unsigned integer type */ 108 typedef LUA_UNSIGNED lua_Unsigned; 109 110 111 112 113 /* 114 ** generic extra include file 115 */ 116 #if defined(LUA_USER_H) 117 #include LUA_USER_H 118 #endif 119 120 121 /* 122 ** RCS ident string 123 */ 124 extern const char lua_ident[]; 125 126 127 /* 128 ** state manipulation 129 */ 130 LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); 131 LUA_API void (lua_close) (lua_State *L); 132 LUA_API lua_State *(lua_newthread) (lua_State *L); 133 134 LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); 135 136 137 LUA_API const lua_Number *(lua_version) (lua_State *L); 138 139 140 /* 141 ** basic stack manipulation 142 */ 143 LUA_API int (lua_absindex) (lua_State *L, int idx); 144 LUA_API int (lua_gettop) (lua_State *L); 145 LUA_API void (lua_settop) (lua_State *L, int idx); 146 LUA_API void (lua_pushvalue) (lua_State *L, int idx); 147 LUA_API void (lua_remove) (lua_State *L, int idx); 148 LUA_API void (lua_insert) (lua_State *L, int idx); 149 LUA_API void (lua_replace) (lua_State *L, int idx); 150 LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx); 151 LUA_API int (lua_checkstack) (lua_State *L, int sz); 152 153 LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); 154 155 156 /* 157 ** access functions (stack -> C) 158 */ 159 160 LUA_API int (lua_isnumber) (lua_State *L, int idx); 161 LUA_API int (lua_isstring) (lua_State *L, int idx); 162 LUA_API int (lua_iscfunction) (lua_State *L, int idx); 163 LUA_API int (lua_isuserdata) (lua_State *L, int idx); 164 LUA_API int (lua_type) (lua_State *L, int idx); 165 LUA_API const char *(lua_typename) (lua_State *L, int tp); 166 167 LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum); 168 LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); 169 LUA_API lua_Unsigned (lua_tounsignedx) (lua_State *L, int idx, int *isnum); 170 LUA_API int (lua_toboolean) (lua_State *L, int idx); 171 LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); 172 LUA_API size_t (lua_rawlen) (lua_State *L, int idx); 173 LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); 174 LUA_API void *(lua_touserdata) (lua_State *L, int idx); 175 LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); 176 LUA_API const void *(lua_topointer) (lua_State *L, int idx); 177 178 179 /* 180 ** Comparison and arithmetic functions 181 */ 182 183 #define LUA_OPADD 0 /* ORDER TM */ 184 #define LUA_OPSUB 1 185 #define LUA_OPMUL 2 186 #define LUA_OPDIV 3 187 #define LUA_OPMOD 4 188 #define LUA_OPPOW 5 189 #define LUA_OPUNM 6 190 191 LUA_API void (lua_arith) (lua_State *L, int op); 192 193 #define LUA_OPEQ 0 194 #define LUA_OPLT 1 195 #define LUA_OPLE 2 196 197 LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); 198 LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op); 199 200 201 /* 202 ** push functions (C -> stack) 203 */ 204 LUA_API void (lua_pushnil) (lua_State *L); 205 LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); 206 LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); 207 LUA_API void (lua_pushunsigned) (lua_State *L, lua_Unsigned n); 208 LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t l); 209 LUA_API const char *(lua_pushstring) (lua_State *L, const char *s); 210 LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, 211 va_list argp); 212 LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); 213 LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); 214 LUA_API void (lua_pushboolean) (lua_State *L, int b); 215 LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); 216 LUA_API int (lua_pushthread) (lua_State *L); 217 218 219 /* 220 ** get functions (Lua -> stack) 221 */ 222 LUA_API void (lua_getglobal) (lua_State *L, const char *var); 223 LUA_API void (lua_gettable) (lua_State *L, int idx); 224 LUA_API void (lua_getfield) (lua_State *L, int idx, const char *k); 225 LUA_API void (lua_rawget) (lua_State *L, int idx); 226 LUA_API void (lua_rawgeti) (lua_State *L, int idx, int n); 227 LUA_API void (lua_rawgetp) (lua_State *L, int idx, const void *p); 228 LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); 229 LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); 230 LUA_API int (lua_getmetatable) (lua_State *L, int objindex); 231 LUA_API void (lua_getuservalue) (lua_State *L, int idx); 232 233 234 /* 235 ** set functions (stack -> Lua) 236 */ 237 LUA_API void (lua_setglobal) (lua_State *L, const char *var); 238 LUA_API void (lua_settable) (lua_State *L, int idx); 239 LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); 240 LUA_API void (lua_rawset) (lua_State *L, int idx); 241 LUA_API void (lua_rawseti) (lua_State *L, int idx, int n); 242 LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); 243 LUA_API int (lua_setmetatable) (lua_State *L, int objindex); 244 LUA_API void (lua_setuservalue) (lua_State *L, int idx); 245 246 247 /* 248 ** 'load' and 'call' functions (load and run Lua code) 249 */ 250 LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults, int ctx, 251 lua_CFunction k); 252 #define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL) 253 254 LUA_API int (lua_getctx) (lua_State *L, int *ctx); 255 256 LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, 257 int ctx, lua_CFunction k); 258 #define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL) 259 260 LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, 261 const char *chunkname, 262 const char *mode); 263 264 LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data); 265 266 267 /* 268 ** coroutine functions 269 */ 270 LUA_API int (lua_yieldk) (lua_State *L, int nresults, int ctx, 271 lua_CFunction k); 272 #define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) 273 LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg); 274 LUA_API int (lua_status) (lua_State *L); 275 276 /* 277 ** garbage-collection function and options 278 */ 279 280 #define LUA_GCSTOP 0 281 #define LUA_GCRESTART 1 282 #define LUA_GCCOLLECT 2 283 #define LUA_GCCOUNT 3 284 #define LUA_GCCOUNTB 4 285 #define LUA_GCSTEP 5 286 #define LUA_GCSETPAUSE 6 287 #define LUA_GCSETSTEPMUL 7 288 #define LUA_GCSETMAJORINC 8 289 #define LUA_GCISRUNNING 9 290 #define LUA_GCGEN 10 291 #define LUA_GCINC 11 292 293 LUA_API int (lua_gc) (lua_State *L, int what, int data); 294 295 296 /* 297 ** miscellaneous functions 298 */ 299 300 LUA_API int (lua_error) (lua_State *L); 301 302 LUA_API int (lua_next) (lua_State *L, int idx); 303 304 LUA_API void (lua_concat) (lua_State *L, int n); 305 LUA_API void (lua_len) (lua_State *L, int idx); 306 307 LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); 308 LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); 309 310 311 312 /* 313 ** =============================================================== 314 ** some useful macros 315 ** =============================================================== 316 */ 317 318 #define lua_tonumber(L,i) lua_tonumberx(L,i,NULL) 319 #define lua_tointeger(L,i) lua_tointegerx(L,i,NULL) 320 #define lua_tounsigned(L,i) lua_tounsignedx(L,i,NULL) 321 322 #define lua_pop(L,n) lua_settop(L, -(n)-1) 323 324 #define lua_newtable(L) lua_createtable(L, 0, 0) 325 326 #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) 327 328 #define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) 329 330 #define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) 331 #define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) 332 #define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) 333 #define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) 334 #define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) 335 #define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) 336 #define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) 337 #define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) 338 339 #define lua_pushliteral(L, s) \ 340 lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1) 341 342 #define lua_pushglobaltable(L) \ 343 lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS) 344 345 #define lua_tostring(L,i) lua_tolstring(L, (i), NULL) 346 347 348 349 /* 350 ** {====================================================================== 351 ** Debug API 352 ** ======================================================================= 353 */ 354 355 356 /* 357 ** Event codes 358 */ 359 #define LUA_HOOKCALL 0 360 #define LUA_HOOKRET 1 361 #define LUA_HOOKLINE 2 362 #define LUA_HOOKCOUNT 3 363 #define LUA_HOOKTAILCALL 4 364 365 366 /* 367 ** Event masks 368 */ 369 #define LUA_MASKCALL (1 << LUA_HOOKCALL) 370 #define LUA_MASKRET (1 << LUA_HOOKRET) 371 #define LUA_MASKLINE (1 << LUA_HOOKLINE) 372 #define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) 373 374 typedef struct lua_Debug lua_Debug; /* activation record */ 375 376 377 /* Functions to be called by the debugger in specific events */ 378 typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); 379 380 381 LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar); 382 LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar); 383 LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n); 384 LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n); 385 LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n); 386 LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n); 387 388 LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n); 389 LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1, 390 int fidx2, int n2); 391 392 LUA_API int (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count); 393 LUA_API lua_Hook (lua_gethook) (lua_State *L); 394 LUA_API int (lua_gethookmask) (lua_State *L); 395 LUA_API int (lua_gethookcount) (lua_State *L); 396 397 398 struct lua_Debug { 399 int event; 400 const char *name; /* (n) */ 401 const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ 402 const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ 403 const char *source; /* (S) */ 404 int currentline; /* (l) */ 405 int linedefined; /* (S) */ 406 int lastlinedefined; /* (S) */ 407 unsigned char nups; /* (u) number of upvalues */ 408 unsigned char nparams;/* (u) number of parameters */ 409 char isvararg; /* (u) */ 410 char istailcall; /* (t) */ 411 char short_src[LUA_IDSIZE]; /* (S) */ 412 /* private part */ 413 struct CallInfo *i_ci; /* active function */ 414 }; 415 416 /* }====================================================================== */ 417 418 419 /****************************************************************************** 420 * Copyright (C) 1994-2015 Lua.org, PUC-Rio. 421 * 422 * Permission is hereby granted, free of charge, to any person obtaining 423 * a copy of this software and associated documentation files (the 424 * "Software"), to deal in the Software without restriction, including 425 * without limitation the rights to use, copy, modify, merge, publish, 426 * distribute, sublicense, and/or sell copies of the Software, and to 427 * permit persons to whom the Software is furnished to do so, subject to 428 * the following conditions: 429 * 430 * The above copyright notice and this permission notice shall be 431 * included in all copies or substantial portions of the Software. 432 * 433 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 434 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 435 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 436 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 437 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 438 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 439 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 440 ******************************************************************************/ 441 442 443 #endif
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